86 lines
2.2 KiB
Go
86 lines
2.2 KiB
Go
/*
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* Copyright (C) 2020-2022, IrineSistiana
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*
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* This file is part of mosdns.
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*
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* mosdns is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* mosdns is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package base_int
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import (
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"context"
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"fmt"
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"github.com/IrineSistiana/mosdns/v5/pkg/query_context"
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"github.com/IrineSistiana/mosdns/v5/plugin/executable/sequence"
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"strconv"
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"strings"
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)
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var _ sequence.Matcher = (*Matcher)(nil)
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type MatchFunc func(qCtx *query_context.Context, m IntMatcher) (bool, error)
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type Matcher struct {
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match MatchFunc
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m IntMatcher
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}
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func (m *Matcher) Match(_ context.Context, qCtx *query_context.Context) (bool, error) {
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return m.match(qCtx, m.m)
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}
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func NewMatcher(args []int, f MatchFunc) (*Matcher, error) {
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m := &Matcher{
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match: f,
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m: make(map[int]struct{}),
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}
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for _, i := range args {
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m.m[i] = struct{}{}
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}
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return m, nil
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}
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// ParseQuickSetupArgs parses numbers to Args.
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// Format: "[int]..."
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func ParseQuickSetupArgs(s string) ([]int, error) {
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args := make([]int, 0)
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for i, s := range strings.Fields(s) {
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n, err := strconv.Atoi(s)
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if err != nil {
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return nil, fmt.Errorf("arg #%d is not an int, %w", i, err)
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}
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args = append(args, n)
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}
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return args, nil
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}
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// QuickSetup returns a sequence.ExecQuickSetupFunc.
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func QuickSetup(f MatchFunc) func(_ sequence.BQ, s string) (sequence.Matcher, error) {
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return func(_ sequence.BQ, s string) (sequence.Matcher, error) {
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args, err := ParseQuickSetupArgs(s)
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if err != nil {
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return nil, fmt.Errorf("invalid args, %w", err)
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}
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return NewMatcher(args, f)
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}
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}
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type IntMatcher map[int]struct{}
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func (m IntMatcher) Has(i int) bool {
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_, ok := m[i]
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return ok
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}
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